Cumesoftware,
I also need a time delay on/off circuit that wont cycle and dosen't need to be triggered and will operate when a 12 volt DC is applied. Was pleased to see your alternative to using 555 timers but cant open your attatchment. Could you please tell me how, Many thanks. Geoff

 

This was tacked onto the end of an old thread - http://forum.allaboutcircuits.com/showthread.php?t=6106.

Sorry we missed it.

 

It's been long enough I doubt he'll be back, unless someone writes a PM and he's set it up. Good arguement for starting new threads.

Is this the schematic you were talking about?

http://www.kpsec.freeuk.com/docs/timer.pdf